<template>
    <el-menu
      default-active="2"
      class="el-menu-vertical-demo"
      @open="handleOpen"
      @close="handleClose"
    :router="true">
      <el-submenu index="1">
        <template #title>
          <i class="el-icon-location"></i>
          <span>导航一</span>
        </template>
        <el-menu-item-group>
          <template #title>分组一</template>
          <el-menu-item index="1-1">选项1</el-menu-item>
          <el-menu-item index="1-2">选项2</el-menu-item>
        </el-menu-item-group>
        <el-menu-item-group title="分组2">
          <el-menu-item index="1-3">选项3</el-menu-item>
        </el-menu-item-group>
        <el-submenu index="1-4">
          <template #title>选项4</template>
          <el-menu-item index="1-4-1">选项1</el-menu-item>
        </el-submenu>
      </el-submenu>
      <el-menu-item index="/menu">
        <i class="el-icon-menu"></i>
        <template #title>菜单管理</template>
      </el-menu-item>
      <el-menu-item index="/method">
        <i class="el-icon-document"></i>
        <template #title>后台方法</template>
      </el-menu-item>
      <el-menu-item index="/code">
        <i class="el-icon-setting"></i>
        <template #title>代码生成</template>
      </el-menu-item>
    </el-menu>
</template>

<script>
  export default {
    methods: {
      handleOpen(key, keyPath) {
        console.log(key, keyPath);
      },
      handleClose(key, keyPath) {
        console.log(key, keyPath);
      }
    }
  }
</script>